Location accuracy signaling for movable relay nodes

Abstract

Methods, systems, and devices for wireless communications are described, including a movable relay location variance report. The movable relay location variance report may enable more robust and accurate communications between a control node (e.g., a user equipment (UE) and a base station) and a movable relay (e.g., a drone) equipped with a reconfigurable intelligent surface (RIS). In some aspects, the location variance report may characterize the variance of the drone's location and transmit the information to the UE, the base station, or both. The location variance report may influence the control node beam width, the drone location, and an angle at which the drone may position a RIS. The control node may indicate an adjusted set of parameters to the drone based on receiving the location variance report.

What is claimed is: 
     
       1. A method for wireless communications at a control node, comprising:
 establishing a connection with a movable relay node positioned at a first location; 
 receiving, from the movable relay node and based at least in part on establishing the connection, a message indicating a location variance for the movable relay node at the first location; and 
 adjusting a set of operational parameters for the movable relay node based at least in part on receiving the message indicating the location variance for the movable relay node. 
 
     
     
       2. The method of  claim 1 , wherein receiving the message further comprises:
 receiving a request for the movable relay node to move to a second location based at least in part on determining that the location variance for the movable relay node at the first location is greater than a threshold. 
 
     
     
       3. The method of  claim 2 , further comprising:
 transmitting, to the movable relay node at the first location and based at least in part on receiving the request, a location message indicating the second location for the movable relay node, wherein adjusting the set of operational parameters is based at least in part on transmitting the location message. 
 
     
     
       4. The method of  claim 1 , wherein receiving the message further comprises:
 receiving a request indicating a beam width for a beam used to communicate with the movable relay node, wherein adjusting the set of operational parameters is based at least in part on receiving the request indicating the beam width. 
 
     
     
       5. The method of  claim 4 , further comprising:
 transmitting, to the movable relay node at the first location and based at least in part on receiving the request of the beam width, an indication of a selected beam width for communicating with the movable relay node, wherein adjusting the set of operational parameters comprises adjusting a current beam width for the beam used to communicate with the movable relay node to the selected beam width. 
 
     
     
       6. The method of  claim 1 , wherein receiving the message further comprises:
 receiving a request for a second beam width wider than a first beam width by a factor, wherein the location variance for the movable relay node is determined based at least in part on the first beam width. 
 
     
     
       7. The method of  claim 1 , further comprising:
 transmitting, to the movable relay node at the first location and based at least in part on receiving the message indicating the location variance, an indication of a distance between the movable relay node and a second node, wherein adjusting the set of operational parameters is based at least in part on transmitting the indication of the distance. 
 
     
     
       8. The method of  claim 7 , wherein the control node comprises a user equipment (UE) and the second node comprises a base station. 
     
     
       9. The method of  claim 1 , further comprising:
 transmitting, to the movable relay node at the first location and based at least in part on receiving the message indicating the location variance, an indication of a second value associated with a reconfigurable intelligent surface plane angle for the movable relay node, wherein adjusting the set of operational parameters is based at least in part on transmitting the indication of the second value. 
 
     
     
       10. The method of  claim 1 , wherein receiving the message further comprises:
 receiving a physical downlink shared channel comprising the message indicating the location variance for the movable relay node, wherein the message comprises a radio resource control message, a medium access control (MAC) control element, or both. 
 
     
     
       11. The method of  claim 1 , wherein receiving the message further comprises:
 receiving a physical sidelink shared channel comprising the message indicating the location variance for the movable relay node. 
 
     
     
       12. The method of  claim 1 , wherein the message comprises a periodic message or an aperiodic message. 
     
     
       13. The method of  claim 1 , wherein the location variance is in accordance with an axis of the movable relay node, or a geographic coordinate system, or both. 
     
     
       14. The method of  claim 1 , wherein the control node comprises a user equipment (UE) or a base station or both. 
     
     
       15. The method of  claim 1 , wherein the control node comprises a base station and a second node comprises a user equipment (UE). 
     
     
       16. A method for wireless communications at a movable relay node, comprising:
 establishing a connection with a control node, wherein the movable relay node is positioned at a first location; 
 transmitting, to the control node and based at least in part on establishing the connection, a message indicating a location variance for the movable relay node at the first location; and 
 receiving, from the control node, an indication of an adjusted set of operational parameters for the movable relay node based at least in part on transmitting the message indicating the location variance for the movable relay node. 
 
     
     
       17. The method of  claim 16 , further comprising:
 determining that the location variance for the movable relay node at the first location is greater than a threshold, wherein transmitting the message comprises transmitting a request for the movable relay node to move to a second location based at least in part on determining that the location variance for the movable relay node at the first location is greater than the threshold. 
 
     
     
       18. The method of  claim 17 , further comprising:
 receiving, from the control node and based at least in part on transmitting the request, a location message indicating the second location for the movable relay node, wherein the adjusted set of operational parameters is adjusted based at least in part on the location message. 
 
     
     
       19. The method of  claim 16 , wherein transmitting the message further comprises:
 transmitting a request indicating a beam width for a beam used to communicate with the movable relay node. 
 
     
     
       20. The method of  claim 19 , further comprising:
 receiving, from the control node and based at least in part on transmitting the request of the beam width, an indication of a selected beam width for communicating with the movable relay node, wherein the adjusted set of operational parameters comprises adjusting a current beam width for the beam used to communicate with the movable relay node to the selected beam width. 
 
     
     
       21. The method of  claim 16 , further comprising:
 determining the location variance for the movable relay node is determined based at least in part on a first beam width, wherein transmitting the message comprises transmitting a request for a second beam width wider than the first beam width by a factor. 
 
     
     
       22. The method of  claim 16 , further comprising:
 receiving, from the control node and based at least in part on transmitting the message indicating the location variance, an indication of a distance between the movable relay node and a second node, wherein the adjusted set of operational parameters is based at least in part on the indication of the distance. 
 
     
     
       23. The method of  claim 22 , wherein the control node comprises a user equipment (UE) and the second node comprises a base station. 
     
     
       24. The method of  claim 16 , further comprising:
 receiving, from the control node and based at least in part on transmitting the message indicating the location variance, an indication of a second value associated with a reconfigurable intelligent surface plane angle for the movable relay node, wherein the adjusted set of operational parameters is based at least in part on the indication of the second value. 
 
     
     
       25. The method of  claim 16 , wherein transmitting the message further comprises:
 transmitting a physical downlink shared channel comprising the message indicating the location variance for the movable relay node, wherein the message comprises a radio resource control message, a medium access control (MAC) control element, or both. 
 
     
     
       26. The method of  claim 16 , wherein transmitting the message further comprises:
 transmitting a physical sidelink shared channel comprising the message indicating the location variance for the movable relay node. 
 
     
     
       27. The method of  claim 16 , wherein the location variance is in accordance with an axis of the movable relay node, or a geographic coordinate system, or both. 
     
     
       28. An apparatus for wireless communications at a control node, comprising:
 a processor; 
 memory coupled with the processor; and 
 instructions stored in the memory and executable by the processor to cause the apparatus to:
 establish a connection with a movable relay node positioned at a first location; 
 receive, from the movable relay node and based at least in part on establishing the connection, a message indicating a location variance for the movable relay node at the first location; and 
 adjust a set of operational parameters for the movable relay node based at least in part on receiving the message indicating the location variance for the movable relay node. 
 
 
     
     
       29. The apparatus of  claim 28 , wherein the instructions to receive the message are further executable by the processor to cause the apparatus to:
 receive a request for the movable relay node to move to a second location based at least in part on determining that the location variance for the movable relay node at the first location is greater than a threshold. 
 
     
     
       30. An apparatus for wireless communications at a movable relay node, comprising:
 a processor; 
 memory coupled with the processor; and 
 instructions stored in the memory and executable by the processor to cause the apparatus to:
 establish a connection with a control node, wherein the movable relay node is positioned at a first location; 
 transmit, to the control node and based at least in part on establishing the connection, a message indicating a location variance for the movable relay node at the first location; and 
 receive, from the control node, an indication of an adjusted set of operational parameters for the movable relay node based at least in part on transmitting the message indicating the location variance for the movable relay node.